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    ENS:ModifyInstanceNetworkAttribute

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    ENS:ModifyInstanceNetworkAttribute

    Last Updated:Dec 10, 2025

    Modifies the private IP address or vSwitch of a VPC-type ECS instance.

    Operation description

    The instance that you want to manage must be in the Stopped state. When you modify the parameters of a scaling group, the following limits apply:

    • Instance:

      • Instances that are associated with SLB are not supported.

    • Network:

      • Instances that are associated with EIPs are not supported.
      • Instances that are associated with high-availability virtual IP addresses are not supported.
      • Instances that have been used as next hops in the routing table are not supported.
      • Secondary ENIs cannot be attached to the ECS instance.
      • Instances configured with secondary IP addresses are not supported.

    Debugging

    You can run this interface directly in OpenAPI Explorer, saving you the trouble of calculating signatures. After running successfully, OpenAPI Explorer can automatically generate SDK code samples.

    Authorization information

    The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

    • Operation: the value that you can use in the Action element to specify the operation on a resource.
    • Access level: the access level of each operation. The levels are read, write, and list.
    • Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
      • For mandatory resource types, indicate with a prefix of * .
      • If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
    • Condition Key: the condition key that is defined by the cloud service.
    • Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.
    OperationAccess levelResource typeCondition keyAssociated operation
    ens:ModifyInstanceNetworkAttributeupdate
    *All Resources
    *
      none
    		none

    Request parameters

    ParameterTypeRequiredDescriptionExample
    InstanceIdstringYes

    The ID of the ENS instance.

    		i-5myukg7hnpbto7m024002****
    VSwitchIdstringNo

    The vSwitch IDs.

    • If you set this parameter to the ID of the current vSwitch, the vSwitch of the ECS instance remains unchanged.
    • The input ID is a new vSwitch, and the new and old vSwitches must belong to the same node.
    • By default, if this parameter is not specified, a private IP address is randomly assigned from within the CIDR block of the specified vSwitch.
    		vsw-5rllcjb3ol6duzjdnbm1o****
    PrivateIpAddressstringNo

    The new private IP address of the ECS instance. By default, if this parameter is empty, a private IP address is randomly assigned from the CIDR block of the specified vSwitch.

    		192.168.XX.XX

    Response parameters

    ParameterTypeDescriptionExample
    object

    Schema of Response

    RequestIdstring

    The request ID.

    		125B04C7-3D0D-4245-AF96-14E3758E3F06

    Examples

    Sample success responses

    JSONformat

    {
  "RequestId": "125B04C7-3D0D-4245-AF96-14E3758E3F06"
}

    Error codes

    HTTP status codeError codeError messageDescription
    400ens.interface.errorFailed to call API.-
    400InvalidDependence.%sThe Specified operation is denied due to %s.The instance has dependencies and cannot be modified.
    400InvalidInstanceId.NotFoundThe specified InstanceId does not exist.The specified instance does not exist.
    400IncorrectInstanceStatusThe current status of the resource does not support this operation.The current operation is not supported. The disk is being reset.
    400InvalidInstanceType.NotSupportedThe specified InstanceType is not Supported.The specified instance type does not support the current operation.
    400IncorrectNetworkInterfaceStatusThe operation could not be completed because the status of the specified network interface is invalid for this action.The operation could not be completed because the status of the specified network interface is invalid for this action.
    400InvalidVSwitchId.NotFoundSpecified virtual switch does not exist.The specified virtual switch ID does not exist.
    400IncorrectVSwitchStatusThe current status of virtual switch does not support this operation.The specified virtual switch is not available and cannot operate.
    400InvalidPrivateIpAddress.MismatchSpecified private IP address is not in the CIDR block of virtual switch.The specified private IP address is not in the CIDR block of the specified VSwitch.
    400InvalidPrivateIpAddress.DuplicatedThe specified private IP address is duplicated.The specified IP address is already in use.
    400InvalidVSwitchId.IpNotEnoughThe specified virtual switch has not enough available ip.The number of IP addresses in the specified switch is insufficient.
    400Invalid%sThe specified parameter %s is invalid.-
    400Missing%sYou must specify the parameter %s.-
    400NoPermissionPermission denied.-
    400InvalidParameter.%sThe specified field %s invalid. Please check it again.-

    For a list of error codes, visit the Service error codes.

    Change history

    Change timeSummary of changesOperation
    2025-11-13Add OperationView Change Details